Illustrated Rolling Plains red-earth rangeland, mesquite, distant Caprock and bobwhite quail.

Rolling Plains Ecoregion

Knox County Wildlife Exemption

How to get - and keep - a 1-d-1 wildlife management valuation on Knox County land: deadlines, the appraisal district, and the practices that fit this part of Texas.

Ecoregion
Rolling Plains
County seat & CAD
Benjamin, Texas
Application window
January 1 – April 30
Core requirement
Form 50‑129 + PWD‑885 · 3 of 7 qualifying practices annually

The wildlife exemption in Knox County

The wildlife exemption lets Knox County landowners hold on to their 1-d-1 agricultural valuation - and its tax savings - by managing land for native species like bobwhite quail and white-tailed deer. Because the county sits in the Rolling Plains, TPWD's regional standards for that ecoregion set the bar your plan is judged against.

The Rolling Plains sweep from the Caprock east across red-dirt rangeland of mesquite, shinnery oak, and native mid-grasses. This is big-sky ranch country where quail are king: the region is one of the last strongholds of huntable bobwhite populations, and wildlife management plans here often make quail the flagship species with deer and dove alongside.

White-tailed deer are abundant along the drainages and mule deer appear toward the Caprock; but it is quail management - nesting cover, brush mosaics, and half-cuts - that defines a strong wildlife program in the Rolling Plains. Typical target species for Knox County plans include bobwhite quail, scaled (blue) quail, white-tailed deer, mule deer in western counties, Rio Grande turkey, and wintering waterfowl on playas. The recurring habitat challenges - mesquite thickening, drought cycles, loss of nesting cover from continuous grazing, and declining quail across the region - are what a good management plan turns into qualifying work.

On the ground in Knox County

Knox County is open Rolling Plains farm-and-ranch country along the Brazos system, where cultivated ground, mesquite pasture and brushy drainages create most of the habitat edge. The work can work the seams: native field borders, restored grass, protected draws, stock water and selective brush treatment can support deer, turkey, quail and nongame species without disrupting agriculture. The strongest Knox County plan looks like practical management of an open plains property, not a collection of isolated wildlife structures.

Knox County lies in the Rolling Plains and is assigned to TPWD's Rolling Plains wildlife-use appraisal region - the legal map that sets the reduced-tract acreage rule below.

Is there an acreage minimum in Knox County?

Did the tract get smaller since January 1 of last year?

No ➔

There is no wildlife acreage test in Knox County at all. Whatever the size, file Comptroller Form 50‑129 with a PWD‑885 plan. A 7-acre tract that already carried 1‑d‑1 (ag exempt) and was never split can convert with no penalties.

Yes ➔

The Knox County appraisal district has not published its exact figure. However, the legal minimum land requirement for this county in the Rolling Plains region is between 25–50 acres (96–98%). If your acreage is inside of this range, we recommend to file the plan either way; the county will apply whatever they adopted.

Try It Out Risk-Free

One local wrinkle. The Knox County appraisal district publishes a 90% wildlife floor in its own standards, but that figure is below the Rolling Plains band, and the document still describes pre-2019 rollback law - so it reads as a district practice note rather than the reduced-tract test itself. Don’t conclude from it that a split tract under 25 acres can’t qualify, or that an unsplit tract can’t convert. See the district’s document.

See how Knox County compares: minimum acreage for all 254 Texas counties →

How it works here

Knox County follows the statewide 1-d-1 framework (Texas Tax Code §23.51(7)); the local variables are your appraisal district's filing habits and the Rolling Plains intensity standards:

  • Start from an existing ag or timber valuation. Wildlife management is a conversion of qualified open-space land - check eligibility if your status is unclear.
  • File a wildlife management plan (TPWD form PWD‑885) with the Knox County appraisal district, attached to Comptroller Form 50‑129, between January 1 and April 30. What goes in the plan →
  • Perform at least 3 of the 7 practices each year at Rolling Plains intensity levels - see the local examples below.
  • Document everything - dates, photos, quantities. When the chief appraiser requests an annual report (PWD‑888), you'll answer with records, not recollections.
  • No minimum acreage applies unless your tract got smaller since January 1 of last year. If it did, Knox County's figure is covered above - the district picks one number for the whole county, and the plan is still the application either way.

The 7 practices, Rolling Plains-style

These are the kinds of activities appraisal districts in the Rolling Plains recognize as real management - your plan picks at least three. The Rolling Plains region guide covers the species, habitat problems and intensity standards behind them.

1

Habitat control

Sculpting mesquite into a 60/40 grass-to-brush mosaic, deferring grazing to rebuild bunchgrass nesting cover, and managing shinnery oak dunes for quail.

2

Erosion control

Re-vegetating blowouts with native grasses, brush check-dams in red-dirt gullies, and contour ripping on compacted rangeland.

3

Predator control

Coyote and bobcat management balanced with quail nest predator control (skunks, raccoons), and feral hog trapping along rivers.

4

Supplemental water

Overflow-style quail waterers, guzzler installation on dry pastures, windmill overflow wetlands, and playa lake protection.

5

Supplemental food

Half-cutting mesquite for browse, strip-disking for croton and sunflower, milo food strips for quail and dove, and protein feeding for deer in drought.

6

Providing shelter

Half-cut mesquite covey headquarters every 50–100 yards in quail country, brush piles, and retaining lotebush and sand plum thickets.

7

Census counts

Fall covey call counts, spring whistle counts, spotlight deer surveys, and roadside quail counts on standardized routes.

Filing & the appraisal district

DateWhat happens in Knox County
January 1Valuation date - land is judged on its use and qualification as of this day.
Jan 1 – Apr 30File Form 50‑129 with your PWD‑885 plan at the Knox County appraisal district (Benjamin).
After Apr 30Late applications accepted until the appraisal roll certifies, with a 10% penalty on that year's savings.
On requestThe chief appraiser may require a PWD‑888 annual report - many districts ask annually. Keep logs so the answer is one click away.

The Knox County appraisal district is headquartered in Benjamin. For current mailing addresses, phone numbers, and any locally adopted wildlife-use ratio, use the Texas Comptroller's county directory - and confirm details before filing; districts occasionally adjust procedures year to year.

The cost of letting it slip

Losing qualification means market-value taxes going forward - and if the land's use changes to non-agricultural, rollback taxes: the previous three years of tax savings, recaptured in one bill. On typical Knox County acreage that's easily five figures. How rollback works →

Knox County questions

Knox County wildlife exemption FAQ

The questions Knox County landowners ask most - answered against this county’s appraisal district and the Rolling Plains standards its plans are judged by.

How many acres do you need for a wildlife exemption in Knox County?
For most tracts, there is no minimum at all. Knox County applies no acreage test to wildlife management use unless your tract was reduced in size since January 1 of the preceding year. If it was, the Knox County appraisal district applies one figure it has adopted from the band its TPWD wildlife appraisal region carries - Knox County sits in the Rolling Plains region, whose legal minimum land requirement for this county runs 25–50 acres (96–98%). If your acreage is inside of this range, we recommend to file the application either way; the county will apply whatever they adopted.
What is the wildlife exemption filing deadline in Knox County?
April 30. The window opens January 1 and closes April 30 - file Comptroller Form 50‑129 with a TPWD PWD‑885 wildlife management plan attached at the Knox County appraisal district in Benjamin. Miss it and the district still accepts a late application until the appraisal roll certifies (typically mid-July), but with a 10% penalty on that year’s tax savings. One trap catches new owners every year: buying land that already holds the valuation does not carry it over to you - you have to file your own application.
Do I need an existing ag exemption to get a wildlife exemption in Knox County?
Yes. Wildlife management is a qualifying use within the 1-d-1 open-space valuation, not a separate exemption - so the land has to already carry an agricultural or timber productivity valuation on the day you convert. If it does, converting changes the qualifying activity and nothing else: the productivity value carries over from your previous ag category, so your tax bill does not move. If the land lost its valuation, you would requalify the ordinary way first - agricultural use for 5 of the preceding 7 years - and then convert. The conversion playbook →
Which wildlife management practices qualify in Knox County?
Any three of the seven named in Texas Tax Code §23.51(7): habitat control, erosion control, predator control, supplemental water, supplemental food, providing shelter, and census counts. The list is statewide, but the standard you are judged against is regional - Knox County is Rolling Plains country, so the Knox County appraisal district expects work sized to Rolling Plains intensity levels and aimed at the problems that actually limit wildlife here: mesquite thickening, drought cycles, loss of nesting cover from continuous grazing, and declining quail across the region. Habitat control, supplemental water, and census counts are the most common opening three. See what each one looks like here →
What species should a Knox County wildlife management plan target?
Whatever you name, it has to be indigenous - Texas Tax Code §23.51(7) qualifies land used to sustain a breeding, migrating, or wintering population of native wild animals, and that is the species test that actually decides qualification. In the Rolling Plains, plans are usually built around bobwhite quail, scaled (blue) quail, white-tailed deer, mule deer in western counties, Rio Grande turkey, and wintering waterfowl on playas. White-tailed deer are abundant along the drainages and mule deer appear toward the Caprock; but it is quail management - nesting cover, brush mosaics, and half-cuts - that defines a strong wildlife program in the Rolling Plains. Introduced species are the common trap: exotics like axis deer or blackbuck may live on the property, but managing for them (alone) earns you nothing toward your three practices - so confirm every species you name in the plan is native to Texas before you file.
Does Knox County require a PWD-888 annual report every year?
The chief appraiser may require one whenever they ask - that is the statutory standard, and many Texas districts ask annually or on a review cycle. The practical answer is to assume it is coming: keep dated records, photos, and quantities for every practice as you go, and the report is a formality instead of a scramble. Landowners rarely lose a valuation because the work was not done; they lose it because the work could not be proven. What a strong PWD‑888 looks like →
Will switching from cattle to wildlife trigger rollback taxes in Knox County?
No. Rollback under Texas Tax Code §23.55 is triggered by a change to a non-agricultural use - developing, paving, or subdividing the land. Moving from grazing to wildlife management is a change of use within 1-d-1, so the valuation continues uninterrupted and no recapture is owed. What does carry risk is letting the land go idle: land quietly used for nothing agricultural can be treated as having changed use. A documented wildlife plan is precisely how you stay out of that gray zone. How rollback works →
Who approves the wildlife exemption in Knox County - TPWD or the appraisal district?
The appraisal district. The Knox County appraisal district’s chief appraiser reviews your Form 50‑129 and PWD‑885 plan and decides whether the land qualifies, the same as for any agricultural application. Texas Parks & Wildlife publishes the forms and the ecoregion guidelines your plan should match, but it does not approve individual properties and has no vote on your valuation. The district is headquartered in Benjamin; current contact details are in the Texas Comptroller’s county directory.

Looking for the statewide picture? The full Texas wildlife exemption FAQ covers eligibility, plans, practices, reports, and rollback in depth.

The Rolling Plains counties closest to Knox County - same ecoregion, same intensity standards, and largely the same ground:

Foard CountyHaskell CountyKing CountyBaylor CountyStonewall CountyThrockmorton County All 254 counties
Rio Grande wild turkey and northern bobwhite quail among native Texas grasses and limestone

Protect your Knox County valuation.

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